ADDN/ALTN OF ROOF TREATMENT IN ORS MD ACCN 06 X BLOCKS (P-106, P-111, P-149, P-151, P-152, M-97) AT VASANT RANGE COLONY AND CERTAIN MINOR WORKS AT VIKRAM VIHAR UNDER AGE B/R-I OF GE (SOUTH) DELHI CANTT-10

Amount

Dismantling of brick tiles (laid flat or on edge) on roof surface.laid bedded and pointed in any mortar.

Demolition of mud in roof, any thickness, including plastering and leeping upto two storey bldg (whether full thickness removed or only a part there of) complete all as specified and as directed.

M&L for brushing neat cement slurry with 1.00 Kg of cement per Sqm on existing surfaces complete all as specified and as directed.

M&L 75 mm thick ( average thickness ) plain cement concrete 1:2:4 type B-0 using (12.5 mm graded aggregate), as in roof, padding to maintain the uniform slope complete including rendering 10 mm thick (average) plaster on concrete surfaces in CM (1:4) on roof, mixed with water proofing compound and finishing the surface even and smooth without using extra cement all as specified and as directed (Water proofing compound shall be measured and paid seperately).

M&L for Priming roof surfaces and applying water proofing treatment over roofs comprising of the following complete all as specified and as directed.

(a) Applying oil bound bituminous primer at the rate of 0.30 Ltrs/Sqm as per IS 3384-1986 on prepared surfaces. Surface shall be kept free till the moment, the primer is impregnated and the solvent oil in primer is evaporated.

(b) Applying one coat of hot straight run bitumen @ 1.20 Kg/Sqm of grade 30/40 confirming to IS-73 (Grade S-35).

(c) Laying 3mm thick APP polymeric water proofing membrane of weight not less than 3.6 kg/sqm, black finish reinforced with non woven polyster matt, (weight not less than 160 gm/Sqm) with a thermo fusible finish, torching overlaps with a propane or a butane gas torch, with a overlap of 75mm at sides and 100mm at the ends and sealing including applying a coat of cold emulsion bituminous primer all as per manufacturer's instruction including preparation of surface.

(d) The water proofing treatment shall be got carried out by the manufacturer or their authorised applicators. The contractor shall give 10 years guarantee for effectiveness of water proofing treatment, 2.5% of work done amount of this item shall be retained from contractors payment for a period of 10 years reckoned from date of physical completion of this work, or in lieu contractor may deposit bank FDR for the said amount for 10 years which shall be released by GE on expiry of satisfactory completion of 10 years period.

All as per item No 5.00 above but on vertical surfaces.

S & F for Heat Resistant Terrace Tiles (300 mm x 300 mm x 20 mm) with SRI (solar refractive index) > 78, solar reflection > 0.70 and initial emittance > 0.75 on waterproof and slopped surface of terrace, laid over and including 20 mm thick cement sand mortar in the ratio of 1:4 (1 cement : 4 coarse sand) and grouting the joints with mix of white cement & marble powder in ratio of 1:1, including rubbing and polishing of the surface up to 3 cuts complete, including providing skirting up to 150 mm height along the parapet walls in the same manner.

M & L for Providing cement concrete 1:2:4 type B-1 using 20mm graded stone aggregate in roof kerbs or mud stops, rounded or chamfered and hold fast on edge including necessary form work complete.

Supply only water proofing compound.(ISI Marked.Siko or equivalent)

Taking down cement or cement lime plaster, any description, on brick or stone walls, etc including raking out joints, hacking for key, scrubbing down with water etc complete.

M&L for 15 mm thick rendering with redimix plaster (as per manufaturer's instruction) on faces of brick or concrete surfaces finished even and smooth surface wihtout using extra cement on wall of up to four stories bldgs. Make of ready mix plaster: Birla Aerocon/Ultratech radiplast/ACC acoplast

M&L complete removal of existing treatment by mechanical means and applying water proof wall care putty to achieve even and smooth surface and then applying two coat of 100% anti fungal acrylic emulsion exterior grade whether proof paint over and including one coat of exterior primer complete all as specified and as directed ’’ Note -: Primer should be compatible with the paint.

All same as per Ser Item No. 12 but new plaster surfaces of wall all as specified and as directed. Note -: Primer should be compatible with the paint.

M & L for chipping of spalled and loose concrete and cleaning rust from re-inforcement by sand blasting scrubbing down conrete sufrace with wire brushes cleaning with water allowed to dry and applying a layer of zinc rich epoxy primer as antirust on all exposed reinforcement followed by a layer of bonding coat of approved epoxy adhesive on complete exposed surfaces of concrete to be gunited all as specified and applying two layess of guniting over steel welded mesh 2mm dia of wire and aperture 75mm,total thickness of gunite n.exc 25mm thick (average thirteen) auth cement mortar 1: 2 using OPC 53 grade cement mixed with polycrete admixture @ 2% by weight of cement or as per manufacturers instructions and finally applying cement plaster over gunite surface of required thickness to give even uniform and smooth finish conforming to proper gerometrics in cement mortar ( 1 : 3) to match with the existing surface as in sides and soffits etc of slabs, chajjas, fins, facias, parapets , columns and beams etc complete including necessary scaffolding, shuttering, necessary chases to brick work or RCC members at any height upto 4 storey bldgs complete all as specified. (Note : Steel welded mesh is to be tightening /welding with the existing re-inforcement ). The cost of welded mesh is deemed to be included in the unit rate quoted.

Taking down rain water pipe (any size) or pattern incl all fittings, head shoes, bends swan necks etc complete all as specified and as directed.

S&F PVC (SWR) pipes single socketed in any length with rubber ring joints fixed to walls, of 110 mm dia complete all as specified and directed.

S&F PVC (SWR) bends any radius 110mm dia bore

S&F in repairs 500 litres capacity rotational moulded polyethylene water storage tanks (cylindrical vertical with closed top), hoisted and fixed in position all as specified in SSR Part-I, connecting up pipes including 20 mm bore ball brass valves, high pressure, with polythene float and fly- nut complete, screwed for iron pipe or brass ferrule and fixed.

Disconnecting existing tanks, exc 250 ltr and n exc 500 ltr setting aside (or lowering if required) for repairs, cleaning, etc. and hoisting and reconnecting as directed by Engr - in - Charge.

Taking up or down steel tubing and connections including cleaning for re-fixing or removal to store, 15 mm bore of pipe.

All as per item No 20 above but 20 mm bore of pipe.

S & F 40mm dia 3-layer PP-R Polypropylene random copolymer concealed pipes SDR 7.4 (PN 16) UV stabilized and antimicrobial fusion welded having thermal stability for hot & cold water supply including all PP-R plain & brass treaded polypropylene random fittings for over flow pipe of PVC water tank including connection to tank fixed complete to walls, ceilings or in floors etc.

M&L tubes, medium grade galvanised, with all fittings and fixed complete to walls and ceilings or laid floors, 15 mm bore of pipe.

All as per item No 23 above but 20 mm bore of pipe

S & F 40 mm PP-R connection (Tank nipple) for water tank to overflow PP-R pipe 40mm dia .

Demolition of RCC chajja, RCC water tank and other similar work complete all as specified and as directed.

M&L for form work to chajjas and similar items including edges thick finished rough

M&L for RCC 1 : 2 : 4 type B0 using 12.5mm graded stone agg as in chajjas complete all as specified.

S&F 10mm dia TMT bar as in reinforcement of RCC of any description cut to length bent to shape required including cranking, bending, binding with MS wire not less than 0.90 mm dia.

S&F 8mm dia TMT bar as in reinforcement of RCC of any description cut to length bent to shape required including cranking, bending, binding with MS wire not less than 0.90 mm dia.

M&L 75 mm thick plain cement concrete 1:2:4 type B-0 using (12.5 mm graded aggregate), as in tank staging.

Cutting of trees including cutting of trunk n.exc 30cm girth and branches and digging out roots from floor or roofs and walls of up to four storied bldg and making good the dismantled portion in cement mortar 1:3 to match the existing surfaces complete all as specified.

Surface excavation in soft/loose soil, not exceeding 30 cm deep and averaging 15cm deep and getting out, complete all as specified

M&L for 100 mm thick cement concrete 1:4:8 type D-2 using 40 mm graded stone aggregate in sub base.

M&L for Machine pressed precast concrete interlocking paver block M-35 Grade.with grey cement and pigment, any shape and size yellow/red colour confirming to IS 15658-2006 of 60 mm thickness.

M&L for sand cushion under layer of floor complete all as specified and as directed.

Removing of excavated material exc 250 mtr and not exceeding 500 mtr depositing where directed all as specified and directed.

Cutting holes into or through brick wall bult in cement mortar or cement lime mortar and stone walls n.exc 150 sq.cm including making good to the original surface

Cutting chases, pining in making good to facing where required and pinting in cement to , cutting not exc 10cm girth in brick walls.

Excavating in post holes in soft loose soil (or similar holes) each n exc 0.5 cu. m, getting out , returning, filling in and ramming earth or broken rubble mixed with earth around, in layers not exceeding 25 cm complet all as specified and as directed.

S & F steel work in tubular trusses including special shaped washer etc. complete using ERW or induction butt welded tubes conforming to IS 1161-1979 grade St.-240 complete all as specified and as directed by the Engineer-in-Charge

S&F Pre-printed galvalume aluminium zink coating GI based corrugated steel sheet 0.50 mm thick of an colour having tensile strength of 550 Mpa as in roof overing/cladding to wall, fixed with self tapping screw complete all as specified and as directed.

S&F Structural Steel in roof, purlins crane of angle or other section gusset plates, Flat Iron rails braces etc, drilled for fixing, and other covering r etc to be prepared for hanging and sliding with and including either hooks and hinges and other covering running rails and guides and hanging also fastening and fixing complete. Fe- 410 Grade E-250 quality -Bl

M & L for applying two coats of synthetic enamel paint over a coat of red oxide primer on newly steel surfaces of any description over 10 cm in width or grith, not otherwise described including preparation of surfaces.

M&L for cement Concrete Type B1 1:2:4 ( 20 mm Aggregate) in roof Kerbs or Mud stops,rounded or chamfered on edges.

M&L Brick work with sub class B bricks straight or curved on plan exc 6m mean radius built in CM 1:6 Complete all as Specified and directed.

M&L for renderning 15 mm thick in CM 1:4 mixed with WPC on any faces of brick/concrete surfaces finished even and fair with out using extra cement complete all as specified.

M&L for preparation for applying two coat of Premium acrylic emulision paint having VOC less than 50 gm/littre and UV resistence as per IS 15489 : 2004, Alkali fungal resistence dirt resistance exterior paint of required shade (Company Depot Tinted) with silicon additives @ 1.43 litre/10 sqm over and including priming coat of exterior primer applied @ 0.90 litre/10 sqm over new surfaces.

Note :- The contract sum shall be after deducting the amount of credit shown in Sch of Credit of this tender

R C Sharma and Co (BID ID -3152086)

JINDAL ENTERPRISES (BID ID -3151951)

P R Constructions (BID ID -3152334)

M/S Parmod Johar (BID ID -3151990)